Changeset 3165
- Timestamp:
- 11/01/05 14:21:18 (8 years ago)
- Files:
-
- 1 modified
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lm-sensors/trunk/doc/chips/lm93 (modified) (5 diffs)
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lm-sensors/trunk/doc/chips/lm93
r3007 r3165 69 69 tachometer inputs to measure fan speed. Limit and status registers for all 70 70 measured values are included. The LM93 builds upon the functionality of 71 previous motherboard management ASICs and uses some of the LM85 s features71 previous motherboard management ASICs and uses some of the LM85's features 72 72 (i.e. smart tachometer mode). It also adds measurement and control support 73 73 for dynamic Vccp monitoring and PROCHOT. It is designed to monitor a dual 74 74 processor Xeon class motherboard with a minimum of external components. 75 76 77 Driver Description78 ------------------79 80 This driver implements support for the National Semiconductor LM93.81 75 82 76 … … 98 92 two values in this file: one each for #P1_PROCHOT and #P2_PROCHOT, res- 99 93 pectively. Selecting a value not in this list will cause the driver to 100 use the next largest interval. The available intervals are :94 use the next largest interval. The available intervals are (in seconds): 101 95 102 96 #PROCHOT intervals: 0.73, 1.46, 2.9, 5.8, 11.7, 23.3, 46.6, 93.2, 186, 372 … … 108 102 109 103 The LM93 can also override the #PROCHOT pins by driving a PWM signal onto 110 one or both of them. When overridden, the signal has a period of 3.56 m S,104 one or both of them. When overridden, the signal has a period of 3.56 ms, 111 105 a minimum pulse width of 5 clocks (at 22.5kHz => 6.25% duty cycle), and 112 106 a maximum pulse width of 80 clocks (at 22.5kHz => 99.88% duty cycle). … … 160 154 that this parameter has implications for the Smart Tach Mode (see above). 161 155 162 PWM Output Frequencies: 12, 36, 48, 60, 72, 84, 96, 22500 (h/w default)156 PWM Output Frequencies: 12, 36, 48, 60, 72, 84, 96, 22500 Hz (h/w default) 163 157 164 158 Automatic PWM: … … 172 166 #PROCHOT 1 & 2, and #VRDHOT 1 & 2. The bindings are expressed as a bitmask 173 167 in the /proc files pwm<n>_auto_channels, where a "1" enables the binding, and 174 a "0" disables it. The h/w default is 0x0f (all temperatures bound).168 a "0" disables it. The h/w default is 0x0f (all temperatures bound). 175 169 176 170 0x01 - Temp 1
